Havasupai Falls

The storm timing is the whole story here. Tonight brings 76% probability of showers and thunderstorms with southerly winds at 15 mph — and this is Havasupai. The canyon drains a massive watershed upstream, and you will not see or hear the storm that sends water down the creek. Flash floods here can arrive with little warning and the campground sits in the flood corridor. If you're hiking in today, move fast on the 10-mile trail and be in camp, fed, and with your tent on high ground before dark. Watch the creek color — any turbidity or sudden rise is your cue to move upslope immediately.

Stream flows at relevant gauges are all running near or slightly below median — no red flags there. The Havasupai-area gauges aren't represented in this dataset, but with normal snowmelt conditions and no recent major rain events, the baseline creek level should be manageable. The weather pattern changes that calculus tonight. Rain on the Coconino Plateau above the canyon funnels directly into Havasu Creek faster than most people expect. Sunday still carries 60% thunderstorm probability, primarily morning and midday — plan to be at low-exposure spots by noon and reassess as the sky clears. Sunday night drops to 3% and Monday is sunny at 71°F with light southwest winds — your exit day should be straightforward.

Snowpack data shown is from California SNOTEL stations and is not relevant to this Arizona canyon location. Ignore it for planning purposes. No active fires within 50 miles means air quality is a non-issue all trip.

Logistics: hit the trailhead early today to maximize your window before the evening storm cycle. The 10-mile hike in gains and then loses significant elevation — you want that descent into the canyon done in daylight with dry rock. Monday's sunny weather and 13.5 hours of daylight gives you a comfortable exit window; start hiking out by 7 AM to avoid afternoon heat on the exposed upper plateau. Keep an eye on NWS alerts for flash flood watches — if one issues for Coconino County while you're in the canyon, treat it as a directive to move to high ground, not a suggestion.